Polygon
Label for Semantic & Instance Segmentation
Create a Polygon Label
Type label name in the "Name*" form
Choose Polygon from "Type*" dropdown
Select label color from "Color*" menu
Click "Create" button .
When to use
Polygons enable semantic and instance segmentation.
Architectures such as FCN and Mask R-CNN support polygons (or pixel masks) as input. Common use cases include visually segmenting the road, pedestrians, and cars for automated vehicles.
Adding Sub-Labels
This is useful for having classes associated with higher level instances. Example: drawing rectangles around birds for object detection, but having a class for types of bird within the rectangle (Duck, Geese, etc...).
Click "+ Add Sublables"
Type a sub-label name
Choose sub-label type
Fill out label options
Click "Save"
Data Format
A Polygon schema element creates an array of objects with data consisting of an array of vertices. Each vertex is a XY coordinate relative (0.0 to 1.0) to width and height respectively. The last point is repeated indicating the Polygon is closed.
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